*{margin: 0;padding: 0;}
html{font-size: 20px;height: 100%;}
body{width: 100%;  height: 100%;}
#box{
	width:100%; height:100%;  
	position: relative;
	background: url(../img/red.png);
	background-size: 100% 100%;
}
#btn{
	width: 16rem;height: 7rem;
	position: absolute;
	top: 74%;
	left: 25%;
}
#car2{
	width: 20rem;height: 10rem;
	position: absolute;
	top: 53%;
	left: 15%;
	display: none;
}
#zoom{
	width: 60rem;height: 50rem;
	/*display: none;*/
	position: absolute;
	left: 8%;
	top: 8%;
}
